Establishing method of fitting model for extracting soil heavy mental by low-molecular-weight organic acid
A low-molecular-weight, method-established technology, applied in the field of agricultural biological environment, can solve problems such as unclear relationships, and achieve the effects of good controllability, low cost, and short experiment cycle
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Embodiment 1
[0040]The surface soil (0-20cm) was randomly collected from the field and placed in marked cloth bags. The soil in 10 areas was collected and marked as S1, S2, S3, S4, S5, S6, S7, S8, S9, and S10. The indoor ventilation area is naturally air-dried, and the roots and debris are picked out. After rolling with wooden sticks, they pass through a 100-mesh soil sieve, and then continue to grind them finely with an agate mortar, making them all pass through a 200-mesh sieve, and mix well. Then use the quartering method to sample and save;
[0041] The preparation of formic acid standard solution: formic acid is selected analytically pure (A.R.) reagent, and preparation concentration is 0-100mmol / L (being respectively 0mmol / L, 1mmol / L, 2mmol / L, 5mmol / L, 10mmol / L, 20mmol / L, 50mmol / L, 100mmol / L, a single formic acid standard solution with 8 concentration gradients in total), after the preparation is completed, mark for subsequent use;
[0042] Extraction and detection of formic acid to...
Embodiment 2
[0049] The surface soil (0-20cm) was randomly collected from the field and placed in marked cloth bags. The soil in 10 areas was collected and marked as S1, S2, S3, S4, S5, S6, S7, S8, S9, and S10. The indoor ventilation area is naturally air-dried, and the roots and debris are picked out. After rolling with wooden sticks, they pass through a 100-mesh soil sieve, and then continue to grind them finely with an agate mortar, making them all pass through a 200-mesh sieve, and mix well. Then use the quartering method to sample and save;
[0050] The preparation of formic acid standard solution: formic acid is selected analytically pure (A.R.) reagent, and preparation concentration is 0-100mmol / L (being respectively 0mmol / L, 1mmol / L, 2mmol / L, 5mmol / L, 10mmol / L, 20mmol / L, 50mmol / L, 100mmol / L, a single formic acid standard solution with 8 concentration gradients in total), after the preparation is completed, mark for subsequent use;
[0051] Extraction and detection of formic acid t...
Embodiment 3
[0058] The surface soil (0-20cm) was randomly collected from the field and placed in marked cloth bags. The soil in 10 areas was collected and marked as S1, S2, S3, S4, S5, S6, S7, S8, S9, and S10. The indoor ventilation area is naturally air-dried, and the roots and debris are picked out. After rolling with wooden sticks, they pass through a 100-mesh soil sieve, and then continue to grind them finely with an agate mortar, making them all pass through a 200-mesh sieve, and mix well. Then use the quartering method to sample and save;
[0059] The preparation of formic acid standard solution: formic acid is selected analytically pure (A.R.) reagent, and preparation concentration is 0-100mmol / L (being respectively 0mmol / L, 1mmol / L, 2mmol / L, 5mmol / L, 10mmol / L, 20mmol / L, 50mmol / L, 100mmol / L, a single formic acid standard solution with 8 concentration gradients in total), after the preparation is completed, mark for subsequent use;
[0060] Extraction and detection of formic acid t...
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